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noun

Meniscus n. (pl. L. menisci, E. meniscuses)

A crescent.

(Opt.) A lens convex on one side and concave on the other.

(Anat.) An interarticular synovial cartilage or membrane; esp., one of the intervertebral synovial disks in some parts of the vertebral column of birds.

Converging meniscus, Diverging meniscus. See Lens.

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Etymology of 'Meniscus'

Collaborative International Dictionary of English 0.48

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"Meniscus" Quotes from Famous Books

... the measuring tube; when the mercury has reached this point, thin boards and card-boards are added till a suitable pressure is obtained. The length of the inclosed cylinder of air is then measured with the cathetometer, also the height of the mercurial "meniscus," and the difference of the heights of the mercurial columns in A and B, figure 4. To obtain a second measure an assistant removes some of the boxes and the cylinder is lowered by hand three or four centimeters and then replaced in its original ...

— Scientific American Supplement, No. 303 - October 22, 1881 • Various

... should be of such a capacity as to contain at 17.5 deg. C. 100.06 cubic centimeters, when filled in such a manner that the lowest point of the meniscus of the surface of the liquid just touches the graduation mark. The flasks will be standardized to contain this volume in order that the results shall conform to the scale recommended for adoption without numerical reduction of the weighings to vacuo. They should be calibrated ...

— Scientific American Supplement No. 822 - Volume XXXII, Number 822. Issue Date October 3, 1891 • Various

... for we have here to deal not so much with the accurate measurement of the actual pressure as with the accurate measurement of differences in pressure. For convenience in reading, the ivory needle at the base of the instrument and the meniscus are well illuminated with electric lamps behind a white screen, and a small lamp illuminates the vernier. The barometer can ...

— Respiration Calorimeters for Studying the Respiratory Exchange and Energy Transformations of Man • Francis Gano Benedict

... a double-convex lens, Fig. 6 a double-concave, and Fig. 7 a concavo-convex or meniscus. By these it is seen that a double-convex lens tends to condense the rays of light to a focus, a double-concave to scatter them, and a ...

— American Handbook of the Daguerrotype • Samuel D. Humphrey

... (Liverpool). A meniscus lens of the diameter of four inches should have a focal length of twenty inches, and will produce perfect landscape pictures fourteen inches square. It is said they will cover fifteen inches; but fourteen they do with great ...

— Notes and Queries, Number 180, April 9, 1853 • Various